-74.06% is the change from 852 to 221
Calculation steps:
[( 221 - 852 ) ÷ 852] x 100 = -74.06%
Formula
Percentage change = [(221 - 852) / 852] x 100
Subtract the new number by the original number
221 - 852 = -631
-631 ÷ 852 = -0.7406103286384976
-0.7406103286384976 x 100 = -74.06%